This section helps you to understand the parameters associated with overlap addressing support.

To View and Edit Overlap Addressing

On SBC main screen, go to Configuration > System Provisioning > Category: Trunk Provisioning > Trunk Group > Sip Trunk Group > Sip Trunk Advanced > Sip Trunk - Services - Advanced > Overlap Addressing. The Overlap Addressing window is displayed.

The Overlap Addressing can be checked for each Address Context, for each Zone, for each Sip Trunk Group created or for all the Address Contexts, Zones and Sip Trunk Groups created. Use the drop-down box to select the desired Address Context, Zone and Sip Trunk Group.

The Edit Overlap Addressing window is displayed.

Figure 1: Sip Trunk Advanced - H323 Trunk - Services - Advanced - Overlap Addressing

The following fields are displayed:

Table 1: Sip Trunk Group - Services - Overlap Addressing parameters

Parameter

Description

Overlap State

 Specifies the whether to support or not support overlap addressing. 

  • disabled (default) 
  • enabled

Min Digits For Query

Specifies the minimum number of digits that need to be received before attempting to route the call. The value ranges from 0 to 30 and the default value is 0.

Timer2

Specifies the maximum time (in seconds) between sending an INVITE and receiving a backward message. The value ranges from 0 to 14 and the default value is 0.

Timer3

Specifies the maximum time (in seconds) between receiving a 484 Address Incomplete message (if there are no outstanding INVITE transactions) and the receipt of fresh address information. The value ranges from 4 to 64 and the default value is 4.

Receive

 Use this parameter to specify the Incoming overlap type.

  • InfoMethod – Select to support Info-based overlap dialing where initial INVITE with incomplete called party digits is answered locally by the SBC to establish early dialog, and subsequent digits are received through INFO message to complete dial sequence.
  • MultiInvite – Select to process multiple INVITEs for the same call with additional digits to complete the dial sequence.
  • disabled (default) – Select to disable this feature.

Send

 Use this parameter to specify the Outgoing overlap type.

  • InfoMethod – Select to support Info-based overlap dialing where initial INVITE with incomplete called party digits is answered locally by the SBC to establish early dialog, and subsequent digits are received through INFO message to complete dial sequence.
  • MultiInvite – Select to process multiple INVITEs for the same call with additional digits to complete the dial sequence.
  • disabled (default) – Select to disable this feature.

Timer1

 Specifies the maximum time (in seconds) between collection of digits. The value ranges from 5 to 15 and the default value is 10.

Make the required changes and click Save at the right hand bottom of the panel to save the changes made.



  • No labels